<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #main{
            position: fixed;
            top: 0; left: 0;
            right: 0; bottom: 0;
        }
    </style>
</head>
<body>
<div id="main"></div>
<script src="./modules.js"></script>
<script src="./mapshaper.js"></script>
<script src="./main.js"></script>
</body>
</html>